Lever arm



FIG. 1 is a perspective view of the lever arm in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The elements depicted in broken line in the various figures are included for environmental purposes only, and form no part of the claimed design. 

The ornamental design for a lever arm, as shown and described. 